int
packet_encode_rr(query_type *q, domain_type *owner, rr_type *rr)
{
size_t truncation_mark;
uint16_t rdlength = 0;
size_t rdlength_pos;
uint16_t j;
assert(q);
assert(owner);
assert(rr);
/*
* If the record does not in fit in the packet the packet size
* will be restored to the mark.
*/
truncation_mark = buffer_position(q->packet);
encode_dname(q, owner);
buffer_write_u16(q->packet, rr->type);
buffer_write_u16(q->packet, rr->klass);
buffer_write_u32(q->packet, rr->ttl);
/* Reserve space for rdlength. */
rdlength_pos = buffer_position(q->packet);
buffer_skip(q->packet, sizeof(rdlength));
for (j = 0; j < rr->rdata_count; ++j) {
switch (rdata_atom_wireformat_type(rr->type, j)) {
case RDATA_WF_COMPRESSED_DNAME:
encode_dname(q, rdata_atom_domain(rr->rdatas[j]));
break;
case RDATA_WF_UNCOMPRESSED_DNAME:
{
const dname_type *dname = domain_dname(
rdata_atom_domain(rr->rdatas[j]));
buffer_write(q->packet,
dname_name(dname), dname->name_size);
break;
}
default:
buffer_write(q->packet,
rdata_atom_data(rr->rdatas[j]),
rdata_atom_size(rr->rdatas[j]));
break;
}
}
if (!query_overflow(q)) {
rdlength = (buffer_position(q->packet) - rdlength_pos
- sizeof(rdlength));
buffer_write_u16_at(q->packet, rdlength_pos, rdlength);
return 1;
} else {
buffer_set_position(q->packet, truncation_mark);
query_clear_dname_offsets(q, truncation_mark);
assert(!query_overflow(q));
return 0;
}
}
/*
* Compares two rdata arrays.
*
* Returns:
*
* zero if they are equal
* non-zero if not
*
*/
static int
zrdatacmp(uint16_t type, rr_type *a, rr_type *b)
{
int i = 0;
assert(a);
assert(b);
/* One is shorter than another */
if (a->rdata_count != b->rdata_count)
return 1;
/* Compare element by element */
for (i = 0; i < a->rdata_count; ++i) {
if (rdata_atom_is_domain(type, i)) {
if (rdata_atom_domain(a->rdatas[i])
!= rdata_atom_domain(b->rdatas[i]))
{
return 1;
}
} else if(rdata_atom_is_literal_domain(type, i)) {
if (rdata_atom_size(a->rdatas[i])
!= rdata_atom_size(b->rdatas[i]))
return 1;
if (!dname_equal_nocase(rdata_atom_data(a->rdatas[i]),
rdata_atom_data(b->rdatas[i]),
rdata_atom_size(a->rdatas[i])))
return 1;
} else {
if (rdata_atom_size(a->rdatas[i])
!= rdata_atom_size(b->rdatas[i]))
{
return 1;
}
if (memcmp(rdata_atom_data(a->rdatas[i]),
rdata_atom_data(b->rdatas[i]),
rdata_atom_size(a->rdatas[i])) != 0)
{
return 1;
}
}
}
/* Otherwise they are equal */
return 0;
}
static int
rdata_dname_to_string(buffer_type *output, rdata_atom_type rdata,
rr_type* ATTR_UNUSED(rr))
{
buffer_printf(output,
"%s",
dname_to_string(domain_dname(rdata_atom_domain(rdata)),
NULL));
return 1;
}
void
xfrd_copy_soa(xfrd_soa_t* soa, rr_type* rr)
{
const uint8_t* rr_ns_wire = dname_name(domain_dname(rdata_atom_domain(rr->rdatas[0])));
uint8_t rr_ns_len = domain_dname(rdata_atom_domain(rr->rdatas[0]))->name_size;
const uint8_t* rr_em_wire = dname_name(domain_dname(rdata_atom_domain(rr->rdatas[1])));
uint8_t rr_em_len = domain_dname(rdata_atom_domain(rr->rdatas[1]))->name_size;
if(rr->type != TYPE_SOA || rr->rdata_count != 7) {
log_msg(LOG_ERR, "xfrd: copy_soa called with bad rr, type %d rrs %u.",
rr->type, rr->rdata_count);
return;
}
DEBUG(DEBUG_XFRD,1, (LOG_INFO, "xfrd: copy_soa rr, type %d rrs %u, ttl %u.",
rr->type, rr->rdata_count, rr->ttl));
soa->type = htons(rr->type);
soa->klass = htons(rr->klass);
soa->ttl = htonl(rr->ttl);
soa->rdata_count = htons(rr->rdata_count);
/* copy dnames */
soa->prim_ns[0] = rr_ns_len;
memcpy(soa->prim_ns+1, rr_ns_wire, rr_ns_len);
soa->email[0] = rr_em_len;
memcpy(soa->email+1, rr_em_wire, rr_em_len);
/* already in network format */
memcpy(&soa->serial, rdata_atom_data(rr->rdatas[2]), sizeof(uint32_t));
memcpy(&soa->refresh, rdata_atom_data(rr->rdatas[3]), sizeof(uint32_t));
memcpy(&soa->retry, rdata_atom_data(rr->rdatas[4]), sizeof(uint32_t));
memcpy(&soa->expire, rdata_atom_data(rr->rdatas[5]), sizeof(uint32_t));
memcpy(&soa->minimum, rdata_atom_data(rr->rdatas[6]), sizeof(uint32_t));
DEBUG(DEBUG_XFRD,1, (LOG_INFO,
"xfrd: copy_soa rr, serial %u refresh %u retry %u expire %u",
ntohl(soa->serial), ntohl(soa->refresh), ntohl(soa->retry),
ntohl(soa->expire)));
}
size_t
rdata_maximum_wireformat_size(rrtype_descriptor_type *descriptor,
size_t rdata_count,
rdata_atom_type *rdatas)
{
size_t result = 0;
size_t i;
for (i = 0; i < rdata_count; ++i) {
if (rdata_atom_is_domain(descriptor->type, i)) {
result += domain_dname(rdata_atom_domain(rdatas[i]))->name_size;
} else {
result += rdata_atom_size(rdatas[i]);
}
}
return result;
}
int
rdata_atoms_to_unknown_string(buffer_type *output,
rrtype_descriptor_type *descriptor,
size_t rdata_count,
rdata_atom_type *rdatas)
{
size_t i;
size_t size =
rdata_maximum_wireformat_size(descriptor, rdata_count, rdatas);
buffer_printf(output, " \\# %lu ", (unsigned long) size);
for (i = 0; i < rdata_count; ++i) {
if (rdata_atom_is_domain(descriptor->type, i)) {
const dname_type *dname =
domain_dname(rdata_atom_domain(rdatas[i]));
hex_to_string(
output, dname_name(dname), dname->name_size);
} else {
hex_to_string(output, rdata_atom_data(rdatas[i]),
rdata_atom_size(rdatas[i]));
}
}
return 1;
}
/** add an rdata (uncompressed) to the destination */
static size_t
add_rdata(rr_type* rr, unsigned i, uint8_t* buf, size_t buflen)
{
switch(rdata_atom_wireformat_type(rr->type, i)) {
case RDATA_WF_COMPRESSED_DNAME:
case RDATA_WF_UNCOMPRESSED_DNAME:
{
const dname_type* dname = domain_dname(
rdata_atom_domain(rr->rdatas[i]));
if(dname->name_size > buflen)
return 0;
memmove(buf, dname_name(dname), dname->name_size);
return dname->name_size;
}
default:
break;
}
if(rdata_atom_size(rr->rdatas[i]) > buflen)
return 0;
memmove(buf, rdata_atom_data(rr->rdatas[i]),
rdata_atom_size(rr->rdatas[i]));
return rdata_atom_size(rr->rdatas[i]);
}